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Finding the Fourth Proportional to 410,155.26, 615,229.20 and 129,672.60

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Solution

The fourth proportional to 410,155.26, 615,229.20 and 129,672.60 is: 194,507.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,155.26 : 615,229.20 = 129,672.60 : x
  2. Step 2: Convert to fraction form
    410,155.26/615,229.20 = 129,672.60/x
  3. Step 3: Cross multiply
    410,155.26x = 615,229.20 × 129,672.60
  4. Step 4: Simplify right side
    410,155.26x = 79,778,369,959.92
  5. Step 5: Solve for x
    x = 79,778,369,959.92/410,155.26
  6. Step 6: Final answer
    x = 194,507.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.